Pole-changer.



PA'EENTED SEPT. 15, 1903.

1'. W. WARNER.

POLE CHANGER.

nrmouron FILED SEPT. 7, 1901...

2 SHEETS-SHEET 1.

H0 MODEL.

INVENTOR.

A TTORNE K WITNESSES "m: mums pawns o0. PuuToumu, wAsHmcYoN, a c

No. 739,128. PATEN'IBD SEPT. 15, 1903. T. W. WARNER.

POLE CHANGER.

uruouron mum 81:21:. 7, 1901.

10 MODEL.

2 SHEETS-SHEET 2.

I I I Lo: /K

I J w M h M 21 5%, Y %TLZLLW W4? v v Mal 4770M Tu: mums Pnzns co. wuorou'mo, wumncaon. n. c.

UNITED STATES Patented September 15, 1903.

T PATENT OFFICE.

THOMAS W. WVARNER, OF MUN CIE, INDIANA, ASSIGNOR TO \VARNER ELECTRIC COMPANY, OF MUNOIE, INDIANA.

POLE-CHANG ER.

SPECIFICATION forming part of Letters Patent No. 739,128, dated September 15, 1903. 3

Application filed $eptember '7, 1901. Serial No. 74,614. (No model.)

To all whom it may concern:

Be it known that I, THOMAS W. WARNER, .a citizen of the United States, and a resident of Muncie, in the county of Delaware and State of Indiana, have invented a new and useful Improvement in Pole-Changers, of which the following is a specification.

This invention relates to a system of wiring for producing alternating and positive and negative pulsating currents from a pole changer, the pole-changer being of the vibrating-arm type, the pole-changer shown being similar in construction to the one shown and described in the patent of WVilliam F. Varner, dated November 5, 1901, No. 685,887.

The main object of this invention is to provide a system of wiring fromthe pole-changer to produce these three dit'terent kinds of ourrents-namely, alternating and positive and negative pulsating currents to be used principally for ringing telephone-bells, either singularly or simultaneously and where the seilective system of signaling is used. These :and other objects not hereinbefore mentioned are accomplished by the construction and system of wiring illustrated in the accompanying drawings, wherein like letters and numbers of reference indicate corresponding parts in the several views, and in which Figure 1 is a diagrammatic View showing the system of wiring from the pole-changer, the pole-changer proper being shown in top plan. Fig. 2 is a diagrammatic view of the outer end of the vibrating arm, showing the wiring and arrangement of contact-points. Fig. 3 is a view similar to Fig. 1, showing a modified form of the system of wiring, and Fig. 4 is a side elevation of the vibrating arm shown in Fig. 1.

\Vhile I have shown a WVarner pole-changer above mentioned, I do not desire to limit myself to this particular kind of pole-changer, as it is obvious that I could use any style of pole-changer wherein the polarity of the current is changed by means of a vibrating arm.

I only show in the drawings so much of the pole-changer sufficient to illustrate the same in connection with the other features of the invention. This particular pole-changer is fully described and shown in the patent granted to Villiam F. \Varner, before mentioned.

In the drawings, A designates a suitable base for supporting the various parts of my device. I

B designates a post extending up from the base.

O designates the rear end of the vibrating arm. This end is metallic and flexible and is connected to the post by the screws 0, which pass through an interposed block of wood 0'. The outer end of the arm D is formed of wood or other suitable non-conductin g material. At the rear end of the outer portion of the arm is located a contact E, which is adapted to have a connection with the flexible brush E, supported on the metallic post E. E is a set-screw for varying the distance between the contact-arm and brush. The post E is connected to one pole of a closed battery-circuit F of any suitable construction by a wire F'. G designates an electric magnet connected to the other pole of the closed battery by means of the wire G. The magnet is connected to the post B by means of the wire G. g is an armature on the arm located opposite the magnet. By this construction it will be readily seen that I have an ordinary circuitbreaker for vibrating the arm in which the current passes from the battery through the magnet, then through the flexible portion of the arm, contact-point E, brush E, and post E back to the battery.

II designates the ringing batteries. These batteries may be of any suitable construction, either primary or secondary. Any other kind of convenient source or means for generating electrical current may be employed, and it is to be understood that the term battery or batteries wherever employed is intended to comprehend and include not only a battery, but other means for generating or producing electric currents. Extending from one pole of these batteries, which for the purpose of convenience I will call the positive "pole, is a wire H,which is connected to the block 0 and then extends forwardly and is connected to the front portion of the arm at I. The wire then extends along the side of the arm and is connected to the contact-point 13 and then to the contact-point V, where it terminates. It

is to be understood that the contact-point 13 does not extend through the arm, while the ICC contact-point V does, as plainly shown in Fig. 2. Extending from the other pole, which is the negative pole, is a wire K, which extends around and is wound around a magnet O in the relay, hereinafter described, then back to the rear of the device and connected to the post K and from the post to the top of the block C. The wire then passes forwardly and is connected to the front portion of the arm at J, but on the opposite side of the arm on which the Wire H is secured. The wire then extends along this side of the arm to the contact-point 14 andthen to the contactpoint W, where it terminates. It is to be understood that the contact-point 14 does not extend through the arm and extends in an opposite direction from the contact-point 13. The contact point IV, however, extends through the arm, as shown in Fig. 2. Both the wires II and K are insulated from all the parts except the contact-points, as before described.

On opposite sides of the arm D are four posts, two on each side, designated, respectively, 1, 2, 3, and 4. The posts 1 and 3 are connected together by means of the Wires 5 and 7, respectively, connected together at 9, forming a single wire 11, which extends to the switchboard in the central office. The wire first passes through a hell or other polarized annunciator 17, as shown in Figs. 1 and 4. The posts 2 and 4: are connected together by the wires 6 and 8, respectively, connected together at-lO, forming the single wire 12, which extends directly to the switchboard in the central office. Secured to each of the posts by means of set-screws is a flexible brush S. These brushes extend toward the contact-points on the vibrating arm.

By referring 1'0 Figs. 1 and 2 and assuming that the contact V is connected to the positive pole of the ringing battery and the contact-point IV connected to the negative pole of the same and assuming that the arm is moved to the right, thereby connecting the wire 7 to the positive pole and the wire 8 to the negative pole, a positive current will be passed through the wire 11, then through the bell 17 to the switchboard in the central ofiice, and a negative current will be returned through the wire 12. When the arm is moved to the left, making a connection with the posts,

the positive point V will send a positive current through the wires 6 and 12 to the switchboard in the central oflice, then through the bell 17 and the negative contact-point WV will draw a negative current through the wires 11 and 5, thereby alternating the currents in both wires 11 and 12 at each vibration of the arm. It is to be understood that the wire 12, connecting the switchboard to the device, could be grounded if found desirable. X X designate binding-posts for the alternating-current wires.

I find it desirable to employ in the use of my device in connection with the alternating currents a condenser U. Inasmuch as the system of wiring and operation of the relay and condenser are identical as that shown in the patent granted to WVilliam F. WVarner,

before mentioned, it is not thought necessary to here describe it.

15 16 designate posts 011 the positive and negative sides of the arm D, respectively. Connected to the post 15 is a flexible brush S, which extends forwardly into the path of the contact-point 13. Connected to the post 16 is a flexible brush S, which extends forwardly into the path of the contact-point 14. C011- nected to the post 15 is a wire 18, which is connected to the positive binding-post Y. (Shown in Fig. 1.) Connected to the post 16 is a wire 19, which is connected to the negative binding-post Y, also shown in Fig. 1. Extending from the positive binding-post Y is a wire 20. This wire is connected to a switch 21, which is adapted to close the circuit with a positive pulsating ringing-bell 22'. This bell is 0011- nected'to the alternating binding post by means of the wire 23. The negative bindingpost Y is connected to the switch 25, which is adapted to close the circuit with the negative pulsating ringing-bel126. The bell is connected to the same binding-post as the wire 23 by means of the wire 27.

The operation of producing the pulsating current is as follows: Assuming that it is necessary to have a pulsating positive current to ring the positive ringing-bell 22, the switch 21 is moved to close the circuit. When the arm is moved to the right, the contact-point 13,which is positive,will send a positive current through the brush S, post 15, wire 18 to the wire 20, through the switch 21, through the bell 22, and then back through the Wire 23 to the hinding-post X. Then the current will pass up the wire 12. Inasmuch as the arm is moved to the right there is no contact with the contact-points on the left-hand side of the arm,

so that the current will pass through the wire 8, post 4:, brush S to the negative contactpoint W, then back to the battery H. When the arm is moved to the left there, is no positive current flowin g through the wires, thereby breaking the circuit and producing a pulsating positive current. When the switch 25 is moved, closing the circuit through the negative ringing-bell 26, a negative pulsating current will be produced when the arm is moved to the left, bringing the contact-point 14 into engagement with the brush S, post 16, wires 19 and 24:, through the switch 25 and bell 26, back through the wire 27, binding-post X, wires 12 and 6, through the contact-point V, back to the battery H.

By the construction just described it will be seen that with this system of wiring I can produce three different kinds of currentsnamely, alternating and pulsating, negative or positive, and can produce them simultaneously if so desired.

In Fig. 3 I showa slight modification of the wiring for producing the pulsating currents. In this system the contact-points 13 and ll IIO are dispensed with and also the wiring from these points to the bells. I substitute for the contacts and the wires 18 and 19 the wires 28 and 29. The wire 28 is connected to the wire H, which, it will be remembered, is connected to the positive pole of the ringing-battery H, and the wire 29-is connected to the wire K, which is connected to the negative-pole of the same battery. The wire 28 is connected to the positive bell 22 by the switch 21, and the bell is connected to the alternating bindingpost X by the wire 23 in the same manner as in the other system. The negative wire 29 is connected to the negative bell 26 in a similar manner as the positive wire 28. The operation is essentially the same as in the other system. Assuming that the arm is moved to the right and the switch 21 is closed, a positive current will flow from the positive pole of the ringing-battery H through the wires H and 28, through the bell 22, wire 23 to the alternating binding-post f,through the wires 12 and 8 to the negative contact-point WV, back to the ringing-battery. If the negative switch 25 is closed and the arm is moved to the left, a negative current will be passed through the negative bell 26. In both cases the current will be pulsating.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is v 1. A system of wiring for producing alternating, and positive and negative pulsating currents consisting of a ringing-battery, a vibrating arm, a negative and positive contactpoint extending from opposite sides of the arm, a negative and positive contact-point extending from both sides of the arm, wiring connecting the contact-points to the ringingbattery, wiring for changing the continuous current at the latter-mentioned contact-points to an alternating current, an annunciator in this circuit, wiring connecting the first-mentioned negative contact-point with one of the wires in the alternating circuit, a negativeacting annunciator in this wiring, wiring connecting the first-mentioned positive contactpoint with one of the wires in the alternating circuit, and a positive-acting annunciator in this wiring.

2. A system of wiring for producing alternating, and positive and negative pulsatingcurrents consisting of a ringing-battery, a vibrating arm, a negative and positive contactpoint extending from opposite sides of the arm, wiring connecting the contact-points with the ringing-battery, wiring for changing the continuous current at the contact-points to an alternating current, an annunciator in this circuit, wiring connecting the negative pole of the ringing-battery to one of the wires in the alternating current, a negative-acting annunciator in this wiring, wiring connecting the positive pole of the ringing-battery with one of the wires in the alternating current and a positive-acting annunciator in the wir- .cluding a make-and-break current device and spring controlled contacts for changing direct constant currents into alternating positive and negative currents and conveying them to suitable terminal binding-posts, with supplementary spring-controlled contacts arranged in operative relation to said make-andbreak current devices, a suitable bindingpost, positioned adjacent to each of said spring-controlled contacts, and a conductive wire arranged to electrically connect said spring-contacts to said binding-posts for producing and conveying direct pulsating currents to said binding-posts, substantially as described.

at. In a pole-changer for transforming direct, constant currents into alternating currents and direct pulsating currents, of positive and negative polarity, the combination with two independent sources of electrical current, of a suitable make-and-break current device connected to and operated by one source of electric current, means including conductive wires for conveying the second source of electric current to said make-andbreak device, means including suitable contacts for establishing contact with both makeand-break movements of said make-and-break device, and for changing direct, constant currents into alternating currents, and conveying them to suitable terminal binding-posts, with a supplementary contact device on said make-and-break device in electrical connection with said alternating-current contacts, and arranged to operate on both make-andbreak movements of said make-and-break device, and means, including a conductive wire extending from said alternating-current contacts for shunting a portion of said alternating current to said supplementary contacts on said make-and-break devices, and means, including suitable terminal binding-posts, electrically connected to said supplementary contacts for producing and conveying direct pulsating positive and negative currents to said terminal binding-posts, substantially as described. I In testimony whereof I have hereunto affixed my signature in the presence of two witnesses.

THOMAS 'W. IVARNER.

'lVitnesses:

' W. A. THORNBURG,

WM. DU VAL BROWN.

Ill; 

